Just how great would you say

Yes, Corrales was less than 100% that night, but Mayweather beat him up as comprehensively as a man can be beat up, and I think its safe to say that was a true all time great performance. Took on an unbeaten, proven bomber with huge advantages in power, reach, and height and took him appart like no one's business, dropped him five times and stopped him in ten. In my eyes that is greatness.